Elementary agriculture with practical arithmetic Elementary agriculture with practical arithmetic . elementaryagricu01hatc Year: 1906 ^^ VENTILATION PLAN. Note: It is the opinion of the writer, however, that per- fect ventilation cannot be secured without the use of arti- ficial heat or some other means of creating a draft. WINDOW VENTILATION PLAN. ing shafts, placed at the ends, on either side of the

---

Size: 1476px × 1355px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage